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Imposed Rubber Elements for Bladed Wheel Vibration Suppression
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SYSNO ASEP 0458638 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Imposed Rubber Elements for Bladed Wheel Vibration Suppression Author(s) Pešek, Luděk (UT-L) RID
Půst, Ladislav (UT-L) RID
Bula, Vítězslav (UT-L) RID
Cibulka, Jan (UT-L)Number of authors 4 Source Title Journal of Vibration Engineering & Technologies - ISSN 2321-3558
Roč. 3, č. 6 (2015), s. 733-741Number of pages 9 s. Publication form Print - P Language eng - English Country IN - India Keywords blade ; vibration ; damping Subject RIV BI - Acoustics R&D Projects GA101/09/1166 GA ČR - Czech Science Foundation (CSF) Institutional support UT-L - RVO:61388998 UT WOS 000367595300006 EID SCOPUS 84953262434 Annotation The proposed contribution deals with a novel research focusing on bladed wheel vibration suppression by inserted elements of temperature resistive rubberlike materials. The FKM rubber was selected as a perspective material since it is known by its resistances against high temperatures and against aggressive chemicals. As a study case, the five-blade bundle linked by wedge-form rubber elements imposed in the head interspaces of the neighbouring blades was chosen. Thermo-mechanical effect on the dynamics of the bundle was investigated numerically and experimentally and a good agreement was achieved in modal characteristics of both approaches. The results of the study show that although the material damping markedly decreases at higher temperatures around 150 degrees C with respect to a room temperature, the damping capacity of the FKM elements remains still relatively high with comparison to the interblade structural damping as a result of dry friction. Workplace Institute of Thermomechanics Contact Marie Kajprová, kajprova@it.cas.cz, Tel.: 266 053 154 ; Jana Lahovská, jaja@it.cas.cz, Tel.: 266 053 823 Year of Publishing 2017
Number of the records: 1